<template>
    <div class="login_container">
        <div class="login_boss">
            <!-- 头像 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登录表单 -->
            <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
                <!-- 用户名 -->
                <el-form-item prop="username" >
                    <el-input type="text" prefix-icon="el-icon-user-solid" v-model="loginForm.username" ></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password" >
                    <el-input type="password" prefix-icon="el-icon-unlock" v-model="loginForm.password" ></el-input>
                </el-form-item>
                <!-- 按钮 -->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
    
</template>

<script>
export default {
    data(){
        return{
            loginForm: {
                username: 'admin',
                password: '123456',
            },
            loginFormRules: {
                username:[
                    {required: true, message:'请输入用户名', trigger: 'blur'},
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password:[
                    {required: true, message:'请输入密码', trigger: 'blur'},
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ],
            }
        }
    },
    methods: {
        resetLoginForm(){
            this.$refs.loginFormRef.resetFields();
        },
        login(){
            this.$refs.loginFormRef.validate(async valid => {
                if(!valid) return;
                const {data: res} = await this.$http.post('login', this.loginForm);
                if(res.meta.status !==200)return this.$message.error('登陆失败');
                this.$message.success("登录成功");
                window.sessionStorage.setItem("token", res.data.token);
                this.$router.push("/home");
            })
        }
    }
}
</script>

<style lang="less" scoped>
    .login_container{
        background-color: #2b4b6b;
        height: 100%;
    }
    .login_boss{
        width: 450px;
        height: 300px;
        background-color: #fff;
        border-radius: 3px;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);

        .avatar_box{
            height: 130px;
            width: 130px;
            border: 1px solid #eee;
            border-radius: 50%;
            padding: 10px;
            box-shadow: 0 0 10px #ddd;
            position: absolute;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: #fff;
            img {
                width: 100%;
                height: 100%;
                border-radius: 50%;
                background-color: #eee;
            }
        }
    }

    .login_form{
        position: absolute;
        bottom: 0;
        width: 100%;
        padding: 0 20px;
        box-sizing: border-box;
    }

    .btns{
        display: flex;
        justify-content: flex-end;
    }
</style>